Targeting the FOXM1-regulated long noncoding RNA TUG1 in osteosarcoma
Yang Li1, Tao Zhang1, Yanhui Zhang1
1Department of Orthopedic Surgery, the First Affiliated Hospital of Harbin Medical University, Harbin, China.
Cancer Science
|August 13, 2018
Summary
Taurine Upregulated Gene 1 (TUG1) promotes osteosarcoma growth and spread by regulating miR-219a-5p and activating the AKT pathway. Targeting TUG1 with locked nucleic acids effectively inhibited osteosarcoma proliferation, suggesting its potential as a therapeutic target.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Long noncoding RNAs (lncRNAs) are implicated in osteosarcoma progression.
- Understanding osteosarcoma pathogenesis and developing novel therapies are critical.
Purpose of the Study:
- To investigate the role of Taurine Upregulated Gene 1 (TUG1) in osteosarcoma.
- To explore TUG1 as a potential therapeutic target for osteosarcoma.
Main Methods:
- Evaluated TUG1 expression in osteosarcoma tissues.
- Assessed TUG1's in vitro effects on proliferation, migration, and invasion.
- Investigated the regulatory mechanisms involving FOXM1, miR-219a-5p, and the AKT pathway.
- Synthesized and tested locked nucleic acids (LNAs) targeting TUG1.
Main Results:
- TUG1 was upregulated in osteosarcoma and positively regulated by FOXM1.
- TUG1 promoted osteosarcoma proliferation, migration, and invasion via sponging miR-219a-5p, upregulating PI3KCA, and activating the AKT pathway.
- A positive feedback loop between AKT pathway activation and TUG1/FOXM1 expression was identified.
- TUG1-targeting LNAs significantly inhibited osteosarcoma proliferation.
Conclusions:
- TUG1 acts as an oncogenic lncRNA in osteosarcoma.
- The TUG1/miR-219a-5p/AKT axis is a key driver of osteosarcoma progression.
- TUG1 is a promising biomarker and therapeutic target for osteosarcoma.
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